Measuring hip-knee-ankle anglesTopic number: 1425412403399

Select the Hip-knee-ankle angle tool and click the appropriate points on the orthopedic image to take the measurement.

To measure the hip-knee-ankle angle

Tip:

To pan and zoom the image while the measurement tool is active, press Space and drag the image to pan or use the mouse wheel to zoom in and out.
  1. In the Image area top toolbar, click the arrow next to the ruler to open the markup list and select Hip-knee-ankle angle. Hip-knee-ankle angle
  2. Click three points on the outline of the ossified femoral head. (Its center is shown as A in diagram.)
  3. Click on the distal femoral epiphysis (B in diagram).
  4. Click on the talar dome (C in diagram).

    A line is painted between the femoral epiphysis and the talar dome. Also, a line marking the angle between the two lines is created.

The hip-knee-ankle angle value is displayed.

Diagram of hip-knee-ankle measurement lines

Lines in the application are displayed according to system color defaults. The diagram uses different colors to prevent ambiguity.